Nickel-copper alloy



' the desirable characteristics of high nickel Patented Oct. 13, 1925.

UNITED STATES PATENT OFFICE.

WALTER I. GRAHAM, OF BALTIMORE, MARYLAND, ASSIGlN'OR, BY MESNE ASSIGN- MENTS, TO U. S. INDUSTRIAL ALCOHOL GO., A CORPORATION OF WEST VIRGINIA.

NICKEL-COPPER ALLOY.

Ito Drawing.

To all whom it may concern:

Be it known that I, WALTER F. GRAHAM, a citizen of the United States, a resident of Baltimore and State of Maryland, have invented a certain new and useful Nickel- Copper Alloy, of which the following is a specification.

This invention: relates to nickel copper alloys having a comparatively low percent- 7 age of nickel withrespectto Monel metal or similar alloys but having at the same time alloys.

The invention has as an object the production of nickel copper alloys containing iron in small amounts for use'in manufacturing, forge materials and for other punposes. It is an object of the invention to eliminate soft metals such as lead and zinc in order to avoid the uneven texture and hardness and the difficulty of working due to large amounts of such soft metals. A further object is to produce a white metal of decreased nickelcontent at minimum expense without incurring the losses hitherto experienced in the prior practice of making white metals of this character. Further objects of the invention will appear hereinafter.

By way of a preferred embodiment two specific examples will be given, which are as follows:

A mix is made of nickel 30 to 35%, iron 5 to 7%, a deoxidizer such as silicon, manganese, or zirconium about 1% or less, and the balance copper. This mix is particularly advantageous for making superheat metals for use in steam fittings, valves, pipes, etc.

ance qualities against corrosion, high tensile I Another composition consists of nickel Application filed August 28, 1923. Serial No. 659,837.

centrati'on of the nickel rich constituent,

whereby there will be obtained the same desirab-le qualities possessed by high nickel alloys, such as Monel metal, without incurring the disadvantages attendant upon fusing high nickel mixes. The nickel may, if

desired, range up to- 45% but not over 50%,

although it is desirable to keep it within the ranges named in the above preferred embodiments. Instead of using Monel metal for the mix, as is customary in this art, itis preferred to use pure metals, thereby avoiding the impurities and small amounts of other metals contained in Monel metal.

As many apparently widely dilferent embodiments of my invention may be made Without departing from the spirit thereof,

it-is to be understood that I do not limit myself to the embodiments described except as defined in the following claims.

I claim v ,7

1. An alloy consisting of nickel 30 to 35%, iron 3 to 7%, and the remainder copper, and containing no lead or zinc.

'2. A ternary copper alloy containing from 30 to 40% nickel and from 3 to 7% 1I0I1.

3. A ternary copper alloy containing from 30 to 40% nickel and about 5% iron. 4. A ternary copper alloy containing from 30 to 45% nickel, from 3 to 7% iron, and containing'no lead or zinc. In testimony that I claim the foregoing,

Ihave hereunto set my hand this 18th day of August, 1923. p v

WALTER-F. GRAHAM. 

